16142729 has 8 divisors (see below), whose sum is σ = 16389768. Its totient is φ = 15897600.

The previous prime is 16142717. The next prime is 16142743. The reversal of 16142729 is 92724161.

It is a happy number.

16142729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9241600 + 6901129 = 3040^2 + 2627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16142729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16142695 and 16142704.

It is not an unprimeable number, because it can be changed into a prime (16142029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27689 + ... + 28265.

It is an arithmetic number, because the mean of its divisors is an integer number (2048721).

Almost surely, 2^16142729 is an apocalyptic number.

It is an amenable number.

16142729 is a deficient number, since it is larger than the sum of its proper divisors (247039).

16142729 is a wasteful number, since it uses less digits than its factorization.

16142729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955.

The product of its digits is 6048, while the sum is 32.

The square root of 16142729 is about 4017.8015132657. The cubic root of 16142729 is about 252.7312732529.

The spelling of 16142729 in words is "sixteen million, one hundred forty-two thousand, seven hundred twenty-nine".